Safety lock



E. D. -WHITE Dec. 20, 1927.

SAFETY LOCK Filed Jan. 5, 1924 2 Sheets-Sheet 1 A TTOR NE Y Dec, 20, 1927., 1,653,487 I E. D. WHITE SAFETY LOCK Filed Jan. 5, 1924 2 Sheets-Sheet 2 INVENTQB m M ,4; ATTORNEY Y to provide Patented .Dec. 20,1921.

UNITED STATES nwm p. warm, or BBOOBYHLNBW roux.

sunrrmcx.

Application fled January 5. 1824. Serial My invention relates to improvements in safety locks for doors and the like, and the same has for its invention to provide a simple, eflicient and inexpensive lock which may be readily applied to a door frame.

Further, said invention has for its object to provide a lock which may be locked or unlocked in the same manner as an ordinary look, but so constructed as to prevent the unauthorized opening of the door.

Further, said invention has for its" object to provide a look by means of which'a door may be secured in its closed position in such manner that the same will yield inwardly without releasing the look, when an instrument or tool is introduced between the door and its frame for the purpose of prying or forcing the door.

Further, said invention has for its object a lock in which the bolt may be interengaged with its keeper and permit of an inwardly yielding movement of said parts without disengagement of the bolt from its keeper.

Other objects will in part be obvious and in part be pointed out hereinafter.

To the attainment of the aforesaid objects and ends my invention consists in the novel details of construction, and in the combination, connection and arrangement of parts hereinafter more fully described and then pointed out in the claims. v v

In the accompanying drawings- Figure 1 is a front elevation showing a door and the frame therefor equipped with one form of safety lock constructed .accord ing to and embodying my said invention;

Fig. 2 is an enlar ed detail face view of a part of the door an frame, and showing the construction of the lock and the keeper therefor, the same being partly broken away and in section;

Fig. 3 .is a horizontal section on. the line 33 of Fig. 2;.

view of the keeper and its Fig 4 is a side mounting, the latter being partly sectioned;

Fig. 5 isla perspective view of the keeper and its mounting;

Fig. 6 is a detail horizontal section on the line 5-5 of Fig. 2; and

Fig. 7 is a detail end yiew of the keeper.

in said drawings, 10 designates a door of the usual construction and 11 the frame comprising the stiles 1'1 and lintel 11". 12 denotes the knob for operating the usual lock mechanism which arranged within the knob 12 and 23 into which casing socketed in the edge of the door. I The safety lock which is designed to-sup lament the ordinary lock which is controlle by the a key to be inserted into the keyhole 14 comprises a casing 15 secured to the door, and a keeper part 16 which is secured to a leaf spring 27 yieldingly supported upon an angle fixed to said plate, the latter being secured in a suitable recess with the stile 11. The casing 15 is provided with a longitudinal housing 17 within which works a bolt 18. The bolt 18 is provided adjacent to its inner plate by-loops 26 or rear end with a series of annular 'projections or ribs 19 forming a rack adapted to be en ged by a pinion 20 located in a rec portion 21 of the housing 17. 22 denotes a shaft having a pinion 20 fixed at its inner end arranged within the casing 17, and its outerend 13, which extends into a key-hole opening 13 in the door 10, of suitable outline or contour'to be engaged by a key, or by a cylinder'adapted to be actuated by a keg;

The 1t 18 is provided adjacent to its outer or forward end with a recess 23 terminating at its inner end in a cam groove extends a projection 24 provided upon the inner side of the cylindrical housing 17 which serves to cause the bolt 18 to be rotated when the same is projected or retracted by the pinion 20 when actuated by the key or device The keeper 16 is integrally secured to one surface-(here shown as the inner surface) of a comparatively heavy leaf spring 27 and is transversely recessed to. receive the outer end of bolt 18. The inner surface of the keeper 16 is provided with a longitudinal slot or recess 29 to receive the projection or catch 30 provided at the outer end of bolt 18. The outer end of the slot or recess 29 terminates in a cam face 29' at the outer end of thekeeper to be engaged by the projection or catch 30 on the bolt 18 when said bolt is fully projected and rotated.

The operation of the-lock is as follows: As ordinarily operated, it merely becomes necessary to insert the key in the keyhole or aperture 14 of the lock provided upon the outer surface of the door, and by turning the same impart a rotary movement to the shaft 22 and the pinion 20 thereon, which 'will cause the said pinion' 20 to project the for operating the same.

I the keeper 16 and cause said extends into the spiral recess 23, will cause the bolt to be rotated, and this, in turn, will cause the projection 30 at the outer end of the bolt to engage with the cam face 29. of projection to engage therewith.

If .an attempt be made to force open the 'door by means of a tool or other implement inserted between the door and the side of the stile 11", the door will yield inwardly by reason of the fact that the keeper 1 6 'movably supported by the spring 27 withm the loops 26, and will therefore move outwardly withoutpermitting the end of the bolt L8 to become disengaged from the keepor 16. 1 The outward movement is against the action of spring 27,.tl1e ends of said spring movin within the loops which thus serve to guide the movements of the spring and keeper. As soon as. the force acting upon the spring is withdrawn, the latter will resume its original position. To maintain keeper 16 properly positioned relative v to bolt 18, stops 35 may be provided against which the ends of sprin 27 normally abut, thus fixing the posi ion 0? the keeper relative to said stops.

To unlock the door in the regular way, it merelybecomes necessary to" insert the key in the keyhole in the outer. surface of the door and rotate the same in the o posite direction from. that first describe whereby the bolt 18 will be partially rotated in order to free the projection 30 at the outer end thereof from its enga ement with the L shaped recess 29 in the keeper 16, and thence permit of the bolt being retracted.

Havinv thus described my said invention what-.I claim and desire to secure by Letters Patent is:

1. A safety lock for fastening a hinged movable member to a fixed member, said lock comprising a bolt mounted on the movable member, and a keeper yieldably mounted on said fixed member, and adapted to yield in the'direction of movement of said hinged member when said bolt and said keeper are in engagement, substantially as specified.

2. A safety lock for fastening a'movable member to a fixed member, said lock comprising a bolt mounted on the movable member, and fixed member to yield inwardly, when said movable member is moved inwardly without releasing the bolt from the keeper, substantially as specified.

3. A safety lock for fastening a movable member to a fixed member, said lock comrising a bolt mounted on the movable memer, a keeper movably mounted on said fixed member to yield in'wardlywhen said movable member is moved inwardly, and means b for opposing the inward movement of said 1 keeper, substantially as specified. i

a keeper movably mounted on said 4. A safety lock for fastening a movable member to a fixed member, said lock comrising a bolt mounted on the movable memer, a keeper movably mounted on said fixed member to yield inwardly in the direction of movement of said movable member when.-

ber, a keeper movably mounted on said fixed member to guiding sai .keeper in its movement, said means comprising brackets secured to said fixed member, and a member fixed to said keeper and operating in said brackets, substantially as specified.

7. A safety lock for fastening a movable member to a fixed member, said lock comprisin a bolt mounted on the movable member, a eeper movably mounted on said fixed member to yield inwardly when said movable member is moved inwardly without releasing the bolt from the keeper, and means for guiding said keeper in itsinward movement, said means fixed to said keeper upon said fixed specified. I

8. A safety lock for fastenin member to a fixed member, -s'ai comprising amember and slidably mounted member, substantially as a movable lock comprising a bolt mounted on the movable member, a eeper movably mounted on said fixed member to yield inwardly when said movable member is moved inwardly, resilient means for opposing the inward movement of said keeper, and means for guiding said keeper in its inward movement, substantially as specified. I

9. A safety member to a prising a bolt mounted on the movable member, a keeper movably mounted on said fixed member to yield inwardly, a springfixed to said keeper for opposing the inward move-1 ment of said keeper, and guide members for said spring, substantially as specified.

10. A safety lock for fastening a movable member to afixed member, said lock comrising a bolt mounted on the movable memlock for fastening a movable er, a rack carried bysaid bolt, an operating pinion with said rack for advancing or retractin the bolt into or out of said 'ield inwardly, and means for fixed member, said lock comer, a keeper mounted on s'a-idfixed mem-' keeper, means for locking said boltin said member to a fixed member, said lock comv keeper, and means for rotating the bolt as gerisinia bolt moimted on the movable mem- I it IS advancedFto render said means r, a eeper mounted on said fixed member, at efiective and for [rotat' id'bolt nail; is a rack carried by said bolt, an operating 5 retracted to render saidocking'mean's'inefe pinion with said rack for advancing or refective substantially as v trac the bolt into or out of said keeper, 11. safety lock for 'a'movable said be t having a catch, saidkeeper havmg member to a fixed member, sai lock coma cam face with which said catch is adapte a boltimounted onftlie'" movable memto engage to lock said bolt in said keeper, a r, aie'eper mounted on said fixed member, rprojection fixed in position relative to said a rack carried by mamas, opera-ting movable member, said bolt having a cam pinion with: said rack-for advancing or reslot in which said last-named projection extract .the 'boltinto' orom of said keeper, tends sothat said bolt is rotated as it is ad- 86 saidbo thavi nga catch, said-keeper having vanced to bring said catch into the recess 15 a cam "face. With-117M611 said catch engages to in said keeper and to; move said catch out of locksaid boltsaid keeper, and means for en agement with said cam face when the v rotating said bolt nail; is advanced to bring be t is retracted, substantially as specified.

I said catchginto-"engagement with said cam Signed at the city of New York, in the 40 .fsee, andto move said catch out of'engagecounty and State of New York, this 26th I'nent with-said cam face when the bolt is reday of May, one thousand nine hundred and v 'tracted, substantially as r 1 sp m I twenty-two; iignfety lock for fastening a movable. ELIJAH D. WHITE. 

